[PATCH] powerpc: mpic protected sources

[Arnd Bergmann]

On Saturday 21 July 2007, Benjamin Herrenschmidt wrote:
> 0% probability of being spam.
> 
> Full report:
> No, score=-2.5 required=5.0 tests=AWL,BAYES_00 autolearn=ham  version=3.1.7-deb  
> Some HW platforms, such as the new cell blades, requires some MPIC sources
> to be left alone by the operating system. This patch implements support for
> a "protected-sources" property in the mpic controller node containing a list
> of source numbers to be protected against operating system interference.
> 
> For those interested in the gory details, the MPIC on the southbridge of
> those blades has some of the processor outputs routed to the cell, and
> at least one routed as a GPIO to the service processor. It will be used
> in the GA product for routing some of the southbridge error interrupts
> to the service processor which implements some of the RAS stuff, such
> as checkstopping when fatal errors occurs before they can propagate.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

Acked-by: Arnd Bergmann <arnd.bergmann at de.ibm.com>